Directional Spool Valve H-4WEH25HD6X/O6EG24N9S2K4 - Bosch Rexroth R901136792

Two switching positions are enough when a drive only alternates between two directions of travel. This pilot-operated size 25 valve therefore works with spool symbol D and without a centre position. It passes up to 700 l/min, holds 350 bar operating pressure and draws pilot oil from an external circuit.

Benefits

• Spool symbol D with two switching positions across four ports
• 700 l/min flow in size 25
• Operating pressure up to 350 bar, connection diagram ISO 4401-08-08-0-05
• External pilot oil supply and external return
• Solenoid actuation at 24 VDC through a 3-pole connector (2 + PE) according to EN 175301-803
• 18.76 kg mass, NBR seals for HL hydraulic fluid

Technical data

Application

Typical drives are lifting cylinders, clamping devices and diverters in conveying plants that only know two end positions. The external control circuit feeds the pilot stage independently of the working pressure. A flow of 700 l/min allows short cycle times even on large piston areas.

Manufacturer

Bosch Rexroth lists this directional valve H-4WEH25HD6X/O6EG24N9S2K4 under material number R901136792. The data sheets Directional spool valves, pilot-operated (RE 24751) and Hydraulic valves and hydro- (RE 07600-B) carry the characteristic curves and installation dimensions. Without a centre position the drive stays in the direction last switched after power is removed, which belongs in the safety assessment.